<div class="container-fluid">
           <div class="col-sm-2 col-md-2 col-lg-2 sidebar">
                <ul class="nav nav-sidebar">
                    <li class="active"><a href="">权限演示</a> </li>
                    <li><a href="javascript:void(0);">测试页面一</a></li>
                    <li><a href="javascript:void(0);">测试页面二</a></li>
                    <li><a href="javascript:void(0);">测试页面三</a></li>
                    <li><a href="javascript:void(0);">测试页面四</a></li>
                    <li class="active"><a href="">系统设置</a> </li>
                <li><a href="javascript:void(0);">用户管理</a></li>
                <li><a href="javascript:void(0);">权限管理</a></li>
                <li><a href="javascript:void(0);">角色管理</a></li>

            </ul>
        </div>
    <div class="col-sm-10 col-sm-offset-2 col-md-10 col-md-offset-2 col-lg-10 col-lg-offset-2">